<?xml version="1.0" encoding="utf-8"?>
<xsd:schema xmlns:wo="http://qwwebservices.usgs.gov/schemas/WQX-Outbound/2_0/" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://qwwebservices.usgs.gov/schemas/WQX-Outbound/2_0/" version="1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:annotation>
    <xsd:documentation>
        Schema Name  : WQX_SimpleContent_v2.0.xsd
        Description   : 	Simple Content file for the WQX schema defining basic simple content and data elements.
        Developed by  : 	 EPA Office of Water and USGS Water Resources Discipline
        Point of Contact :   Dwane Young (EPA) or GS-W-QWWebServicesHelp@usgs.gov
</xsd:documentation>
  </xsd:annotation>
  <xsd:simpleType name="ActivityConductingOrganizationTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityEndDateDataType">
    <xsd:restriction base="xsd:string" />
  </xsd:simpleType>
  <xsd:simpleType name="ActivityGroupIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityGroupNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityGroupTypeCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityMediaNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityMediaSubdivisionNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="45" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityRelativeDepthNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ActivityStartDateDataType">
    <xsd:restriction base="xsd:string" />
  </xsd:simpleType>
  <xsd:simpleType name="ActivityTypeCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="70" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="AddressTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="8" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="AddressTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="AnalysisEndDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="AnalysisStartDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="AquiferNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="AssemblageSampledNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="BiasValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="BiologicalIntentNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="BiologicalIndividualIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="4" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="BinaryObjectFileNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="255" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="BinaryObjectFileTypeCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="6" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="CellFormNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="11" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="CellShapeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="18" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="CharacteristicNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="180" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ChemicalPreservativeUsedNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="250" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="CommentTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="4000" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ConfidenceIntervalValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="CountryCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="2" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="CountyCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="3" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="DataLoggerLineNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="DepthAltitudeReferencePointTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="125" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="DetectionQuantitationLimitTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ElectronicAddressTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ElectronicAddressTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="8" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="FormulaDescriptionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="FormationTypeTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="AquiferTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ConstructionDateTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleAquiferDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="80" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HydrologicConditionDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="25" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HydrologicEventDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="32" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="USGSPCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="5" />
      <xsd:maxLength value="5" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="FrequencyClassDescriptorCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="FrequencyClassDescriptorUnitCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="FunctionalFeedingGroupNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="6" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HabitNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HorizontalCollectionMethodNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="150" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HorizontalCoordinateReferenceSystemDatumNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HUCEightDigitCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="8" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="HUCTwelveDigitCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexCalculatedDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="IndexIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexQualifierCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="5" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexScoreNumericDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexTypeIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexTypeIdentifierContextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="IndexTypeScaleTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LaboratoryAccreditationIndicatorDataType">
    <xsd:restriction base="xsd:boolean" />
  </xsd:simpleType>
  <xsd:simpleType name="LaboratoryAccreditationAuthorityNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LaboratoryNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LatitudeMeasureDataType">
    <xsd:restriction base="xsd:decimal">
      <xsd:totalDigits value="12" />
      <xsd:fractionDigits value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LocalityNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="30" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LocationCategoryNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LocationStatusNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LongitudeMeasureDataType">
    <xsd:restriction base="xsd:decimal">
      <xsd:totalDigits value="14" />
      <xsd:fractionDigits value="11" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LowerConfidenceLimitValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="LowerClassBoundValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="8" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MeasureQualifierCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="5" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MeasureUnitCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MeasureValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MethodDescriptionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="500" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MethodIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MethodIdentifierContextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MethodNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MethodQualifierTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="25" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MethodSpeciationNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MetricTypeIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MetricTypeIdentifierContextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MetricTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MetricScoreNumericDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MetricTypeScaleTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MonitoringLocationDescriptionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="1999" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MonitoringLocationIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MonitoringLocationIdentifierContextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MonitoringLocationNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="255" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="MonitoringLocationTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="45" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="NetTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="30" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="OrganizationDescriptionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="500" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="OrganizationFormalNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="OrganizationIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="30" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="PassCountDataType">
    <xsd:restriction base="xsd:nonNegativeInteger" />
  </xsd:simpleType>
  <xsd:simpleType name="PostalCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="PrecisionValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="PreparationEndDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="PreparationStartDateDataType">
    <xsd:restriction base="xsd:string" />
  </xsd:simpleType>
  <xsd:simpleType name="ProjectDescriptionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="1999" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ProjectIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ProjectNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="QAPPApprovedIndicatorDataType">
    <xsd:restriction base="xsd:boolean" />
  </xsd:simpleType>
  <xsd:simpleType name="QAPPApprovalAgencyNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultCountDataType">
    <xsd:restriction base="xsd:string" />
  </xsd:simpleType>
  <xsd:simpleType name="ReferenceLocationEndDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="ReferenceLocationStartDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="ReferenceLocationTypeCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResourceCreatorNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResourceDateDataType">
    <xsd:restriction base="xsd:date" />
  </xsd:simpleType>
  <xsd:simpleType name="ResourceIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="255" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResourcePublisherNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResourceSubjectTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="500" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResourceTitleNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultDetectionConditionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultLaboratoryCommentCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="3" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultLaboratoryCommentTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="500" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultMeasureValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultParticleSizeBasisTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultSampleFractionTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="25" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultStatusIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultTemperatureBasisTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultTimeBasisTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="12" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultValueTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ResultWeightBasisTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleCollectionEquipmentNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleCollectionEquipmentCommentTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="4000" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleContainerColorNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleContainerTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="35" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleTissueAnatomyNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="60" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SampleTransportStorageDescriptionDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="250" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SamplingComponentNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SamplingComponentPlaceInSeriesNumericDataType">
    <xsd:restriction base="xsd:nonNegativeInteger" />
  </xsd:simpleType>
  <xsd:simpleType name="SamplingDesignTypeCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SourceMapScaleNumericDataType">
    <xsd:restriction base="xsd:nonNegativeInteger" />
  </xsd:simpleType>
  <xsd:simpleType name="StateCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="2" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="StatisticalBaseCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="25" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="StatisticalStratumTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SubjectTaxonomicNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SubstanceDilutionFactorNumericDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="SupplementalAddressTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TaxonomicPollutionToleranceDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="4" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TaxonomistAccreditationIndicatorDataType">
    <xsd:restriction base="xsd:boolean" />
  </xsd:simpleType>
  <xsd:simpleType name="TaxonomistAccreditationAuthorityNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="20" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TaxonomicPollutionToleranceScaleTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TelephoneExtensionNumberTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="6" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TelephoneNumberTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TelephoneNumberTypeNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="6" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ThermalPreservativeUsedNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="25" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TimeDataType">
    <xsd:restriction base="xsd:time" />
  </xsd:simpleType>
  <xsd:simpleType name="TimeZoneCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:minLength value="1" />
      <xsd:maxLength value="6" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="ToxicityTestTypeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="7" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TribalCodeDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="3" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TribalLandIndicatorDataType">
    <xsd:restriction base="xsd:boolean" />
  </xsd:simpleType>
  <xsd:simpleType name="TribalLandNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="200" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="TrophicLevelNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="4" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="UnidentifiedSpeciesIdentifierDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="120" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="UpperConfidenceLimitValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="15" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="UpperClassBoundValueDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="8" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="VerticalCollectionMethodNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="50" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="VerticalCoordinateReferenceSystemDatumNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="10" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="VoltinismNameDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="25" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:simpleType name="WellTypeTextDataType">
    <xsd:restriction base="xsd:string">
      <xsd:maxLength value="255" />
    </xsd:restriction>
  </xsd:simpleType>
  <xsd:element name="ActivityConductingOrganizationText" type="wo:ActivityConductingOrganizationTextDataType">
    <xsd:annotation>
      <xsd:documentation>A name of the Organization conducting an activity.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityEndDate" type="wo:ActivityEndDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date when the field activity was completed.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityGroupIdentifier" type="wo:ActivityGroupIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>Designator that uniquely identifies a grouping of activities within an organization.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityGroupName" type="wo:ActivityGroupNameDataType">
    <xsd:annotation>
      <xsd:documentation>A name of an activity group.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityGroupTypeCode" type="wo:ActivityGroupTypeCodeDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the type of grouping of a set of activities.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityIdentifier" type="wo:ActivityIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>Designator that uniquely identifies an activity within an organization.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityMediaName" type="wo:ActivityMediaNameDataType">
    <xsd:annotation>
      <xsd:documentation>Name or code indicating the environmental medium where the sample was taken.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityMediaSubdivisionName" type="wo:ActivityMediaSubdivisionNameDataType">
    <xsd:annotation>
      <xsd:documentation>Name or code indicating the environmental matrix as a subdivision of the sample media.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityRelativeDepthName" type="wo:ActivityRelativeDepthNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name that indicates the approximate location within the water column at which the activity occurred. </xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityStartDate" type="wo:ActivityStartDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date on which the field activity was started.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ActivityTypeCode" type="wo:ActivityTypeCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The text describing the type of activity.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AddressText" type="wo:AddressTextDataType">
    <xsd:annotation>
      <xsd:documentation>The address that describes the physical (geographic), shipping, or mailing location of an organization.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AddressTypeName" type="wo:AddressTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>Categorizes an address as either location, shipping, or mailing address.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AnalysisEndDate" type="wo:AnalysisEndDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date on which the analysis was finished.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AnalysisStartDate" type="wo:AnalysisStartDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date on which the analysis began.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AquiferName" type="wo:AquiferNameDataType">
    <xsd:annotation>
      <xsd:documentation>Name of the aquifer in which the well is completed.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AssemblageSampledName" type="wo:AssemblageSampledNameDataType">
    <xsd:annotation>
      <xsd:documentation>An association of interacting populations of organisms in a given waterbody.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="BiologicalIntentName" type="wo:BiologicalIntentNameDataType">
    <xsd:annotation>
      <xsd:documentation>The primary reason the biological monitoring has occurred.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="BiologicalIndividualIdentifier" type="wo:BiologicalIndividualIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A number uniquely identifying the individual in accordance with the total number of individuals reported by the user.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="BiasValue" type="wo:BiasValueDataType">
    <xsd:annotation>
      <xsd:documentation>The systematic or persistent distortion of a measurement process which causes error in one direction.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="BinaryObjectFileName" type="wo:BinaryObjectFileNameDataType">
    <xsd:annotation>
      <xsd:documentation>The text describing the descriptive name used to represent the file, including file extension.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="BinaryObjectFileTypeCode" type="wo:BinaryObjectFileTypeCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The text or acronym describing the binary content type of a file.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="CellFormName" type="wo:CellFormNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of the cell form for phytoplankton organisms expressed as a result. A single phytoplankton species may have a result value for any or all of these cell forms.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="CellShapeName" type="wo:CellShapeNameDataType">
    <xsd:annotation>
      <xsd:documentation>The cell shape of the phytoplankton organism.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="CharacteristicName" type="wo:CharacteristicNameDataType">
    <xsd:annotation>
      <xsd:documentation>The object, property, or substance which is evaluated or enumerated by either a direct field measurement, a direct field observation, or by laboratory analysis of material collected in the field.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ChemicalPreservativeUsedName" type="wo:ChemicalPreservativeUsedNameDataType">
    <xsd:annotation>
      <xsd:documentation>Information describing the chemical means to preserve the sample.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="CommentText" type="wo:CommentTextDataType">
    <xsd:annotation>
      <xsd:documentation>Free text with general comments.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ConfidenceIntervalValue" type="wo:ConfidenceIntervalValueDataType">
    <xsd:annotation>
      <xsd:documentation>A range of values constructed so that this range has a specified probability of including the true population mean.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="CountryCode" type="wo:CountryCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code designator used to identify a primary geopolitical unit of the world.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="CountyCode" type="wo:CountyCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code designator used to identify a U.S. county or county equivalent.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="DataLoggerLineName" type="wo:DataLoggerLineNameDataType">
    <xsd:annotation>
      <xsd:documentation>The unique line identifier from a data logger result text file, normally a date/time format but could be any user defined name, e.g. "surface", "midwinter", and or "bottom".)</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="DepthAltitudeReferencePointText" type="wo:DepthAltitudeReferencePointTextDataType">
    <xsd:annotation>
      <xsd:documentation>The reference used to indicate the datum or reference used to establish a depth/altitude measurement.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="DetectionQuantitationLimitTypeName" type="wo:DetectionQuantitationLimitTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>Text describing the type of detection or quantitation level used in the analysis of a characteristic.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ElectronicAddressText" type="wo:ElectronicAddressTextDataType">
    <xsd:annotation>
      <xsd:documentation>A resource address, usually consisting of the access protocol, the domain name, and optionally, the path to a file or location.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ElectronicAddressTypeName" type="wo:ElectronicAddressTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name that describes the electronic address type.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="FormationTypeText" type="wo:FormationTypeTextDataType">
    <xsd:annotation>
      <xsd:documentation>Name of the primary formation or soils unit, in which the well is completed.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="AquiferTypeName" type="wo:AquiferTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>Type of aquifer: Confined multiple aquifer, Unconfined multiple aquifers, Confined single aquifer etc.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ConstructionDateText" type="wo:ConstructionDateTextDataType">
    <xsd:annotation>
      <xsd:documentation>Date of construction when well was completed. May be year only.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="FormulaDescriptionText" type="wo:FormulaDescriptionTextDataType">
    <xsd:annotation>
      <xsd:documentation>Provides a description of the formula used to calculate the activity metric score.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="FrequencyClassDescriptorCode" type="wo:FrequencyClassDescriptorCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code that describes the frequency class, either as a life stage, abnormality, gender, or measurable characteristic (i.e. length, weight) used to categorize a biological population count.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="FrequencyClassDescriptorUnitCode" type="wo:FrequencyClassDescriptorUnitCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The code that represents the unit for measuring the item.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="FunctionalFeedingGroupName" type="wo:FunctionalFeedingGroupNameDataType">
    <xsd:annotation>
      <xsd:documentation>For entries representing taxa, a code representing the functional feeding group with which the reported taxon is typically associated.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="HabitName" type="wo:HabitNameDataType">
    <xsd:annotation>
      <xsd:documentation>The position that the characteristic occupies in a food chain.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="HorizontalCollectionMethodName" type="wo:HorizontalCollectionMethodNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name that identifies the method used to determine the latitude and longitude coordinates for a point on the earth.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="HorizontalCoordinateReferenceSystemDatumName" type="wo:HorizontalCoordinateReferenceSystemDatumNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name that describes the reference datum used in determining latitude and longitude coordinates.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="HUCEightDigitCode" type="wo:HUCEightDigitCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The 8 digit federal code used to identify the hydrologic unit of the monitoring location to the cataloging unit level of precision.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="HUCTwelveDigitCode" type="wo:HUCTwelveDigitCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The 12 digit federal code used to identify the hydrologic unit of the monitoring location to the subwatershed level of precision.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexCalculatedDate" type="wo:IndexCalculatedDateDataType">
    <xsd:annotation>
      <xsd:documentation>Date on which the index was calcualted.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexIdentifier" type="wo:IndexIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A unique designator used to identify a unique index record that the activity metric is associated with.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexQualifierCode" type="wo:IndexQualifierCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code used to identify any qualifying issues that affect the index.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexScoreNumeric" type="wo:IndexScoreNumericDataType">
    <xsd:annotation>
      <xsd:documentation>Provides the score for the index.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexTypeIdentifier" type="wo:IndexTypeIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A designator used to describe the unique name, number, or code assigned to identify the index (Organization specific).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexTypeIdentifierContext" type="wo:IndexTypeIdentifierContextDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the source or data system that created or defined the index.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexTypeName" type="wo:IndexTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>Name of the habitat or biotic integrity index.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="IndexTypeScaleText" type="wo:IndexTypeScaleTextDataType">
    <xsd:annotation>
      <xsd:documentation>Provides a description of the scale used for the index.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LaboratoryAccreditationIndicator" type="wo:LaboratoryAccreditationIndicatorDataType">
    <xsd:annotation>
      <xsd:documentation>Indicates whether the laboratory is accredited.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LaboratoryAccreditationAuthorityName" type="wo:LaboratoryAccreditationAuthorityNameDataType">
    <xsd:annotation>
      <xsd:documentation>An outside accreditation authority identifier.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LaboratoryName" type="wo:LaboratoryNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of Lab responsible for the result.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LatitudeMeasure" type="wo:LatitudeMeasureDataType">
    <xsd:annotation>
      <xsd:documentation>The measure of the angular distance on a meridian north or south of the equator.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LocalityName" type="wo:LocalityNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of a city, town, village or other locality.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LocationCategoryName" type="wo:LocationCategoryNameDataType">
    <xsd:annotation>
      <xsd:documentation>Free text describing a category of naturally similar site types, such as high-gradient.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LocationStatusName" type="wo:LocationStatusNameDataType">
    <xsd:annotation>
      <xsd:documentation>Indicates whether this site is active and available for sampling.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LongitudeMeasure" type="wo:LongitudeMeasureDataType">
    <xsd:annotation>
      <xsd:documentation>The measure of the angular distance on a meridian east or west of the prime meridian.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LowerConfidenceLimitValue" type="wo:LowerConfidenceLimitValueDataType">
    <xsd:annotation>
      <xsd:documentation>Value of the lower end of the confidence interval.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="LowerClassBoundValue" type="wo:LowerClassBoundValueDataType">
    <xsd:annotation>
      <xsd:documentation>This described the lower bound for a frequency class descriptor.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MeasureQualifierCode" type="wo:MeasureQualifierCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code used to identify any qualifying issues that affect the results.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MeasureUnitCode" type="wo:MeasureUnitCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The code that represents the unit for measuring the item.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MeasureValue" type="wo:MeasureValueDataType">
    <xsd:annotation>
      <xsd:documentation>The recorded dimension, capacity, quality, or amount of something ascertained by measuring or observing.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MethodDescriptionText" type="wo:MethodDescriptionTextDataType">
    <xsd:annotation>
      <xsd:documentation>A brief summary that provides general information about the method.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MethodIdentifier" type="wo:MethodIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>The identification number or code assigned by the method publisher.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MethodIdentifierContext" type="wo:MethodIdentifierContextDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the source or data system that created or defined the identifier.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MethodName" type="wo:MethodNameDataType">
    <xsd:annotation>
      <xsd:documentation>The title that appears on the method from the method publisher.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MethodQualifierTypeName" type="wo:MethodQualifierTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>Identifier of type of method that identifies it as reference, equivalent, or other.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MethodSpeciationName" type="wo:MethodSpeciationNameDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the chemical speciation in which the measured result is expressed.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MetricScoreNumeric" type="wo:MetricScoreNumericDataType">
    <xsd:annotation>
      <xsd:documentation>Provides the scaled or calculated score for the activity metric.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MetricTypeIdentifier" type="wo:MetricTypeIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A designator used to describe the unique name, number, or code assigned to identify the metric (Organization specific).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MetricTypeIdentifierContext" type="wo:MetricTypeIdentifierContextDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the source or data system that created or defined the metric.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MetricTypeName" type="wo:MetricTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>Name of the activity metric.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MetricTypeScaleText" type="wo:MetricTypeScaleTextDataType">
    <xsd:annotation>
      <xsd:documentation>Provides a description of the scale used for the activity metric.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MonitoringLocationDescriptionText" type="wo:MonitoringLocationDescriptionTextDataType">
    <xsd:annotation>
      <xsd:documentation>Text description of the monitoring location.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MonitoringLocationIdentifier" type="wo:MonitoringLocationIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A designator used to describe the unique name, number, or code assigned to identify the monitoring location.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MonitoringLocationIdentifierContext" type="wo:MonitoringLocationIdentifierContextDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the source or data system that created or defined the monitoring location identifier.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MonitoringLocationName" type="wo:MonitoringLocationNameDataType">
    <xsd:annotation>
      <xsd:documentation>The designator specified by the sampling organization for the site at which sampling or other activities are conducted.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="MonitoringLocationTypeName" type="wo:MonitoringLocationTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>The descriptive name for a type of monitoring location.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="NetTypeName" type="wo:NetTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>The text describing the type of net.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="OrganizationDescriptionText" type="wo:OrganizationDescriptionTextDataType">
    <xsd:annotation>
      <xsd:documentation>Information that further describes an organization.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="OrganizationFormalName" type="wo:OrganizationFormalNameDataType">
    <xsd:annotation>
      <xsd:documentation>The legal designator (i.e. formal name) of an organization.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="OrganizationIdentifier" type="wo:OrganizationIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A designator used to uniquely identify a unique business establishment within a context.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="PassCount" type="wo:PassCountDataType">
    <xsd:annotation>
      <xsd:documentation>The number of passes through the water from which the sample was collected.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="PostalCode" type="wo:PostalCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The combination of the 5-digit Zone Improvement Plan (ZIP) code and the four-digit extension code (if available) that represents the geographic segment that is a subunit of the ZIP Code, assigned by the U.S. Postal Service to a geographic location to facilitate mail delivery; or the postal zone specific to the country, other than the U.S., where the mail is delivered.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="PrecisionValue" type="wo:PrecisionValueDataType">
    <xsd:annotation>
      <xsd:documentation>A measure of mutual agreement among individual measurements of the same property usually under prescribed similar conditions.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="PreparationEndDate" type="wo:PreparationEndDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date when the preparation/extraction of the sample for analysis was finished.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="PreparationStartDate" type="wo:PreparationStartDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date when the preparation/extraction of the sample for analysis began.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ProjectDescriptionText" type="wo:ProjectDescriptionTextDataType">
    <xsd:annotation>
      <xsd:documentation>Project description, which may include a description of the project purpose, summary of the objectives, or brief summary of the results of the project.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ProjectIdentifier" type="wo:ProjectIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A designator used to uniquely identify a data collection project within a context of an organization.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ProjectName" type="wo:ProjectNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name assigned by the Organization (project leader or principal investigator) to the project.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="QAPPApprovedIndicator" type="wo:QAPPApprovedIndicatorDataType">
    <xsd:annotation>
      <xsd:documentation>Indicates whether a Quality Assurance Project Plan (QAPP) has been approved for the submitted project.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="QAPPApprovalAgencyName" type="wo:QAPPApprovalAgencyNameDataType">
    <xsd:annotation>
      <xsd:documentation>An outside approval authority identifier for the QAPP (e.g. EPA or State Organization).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ReferenceLocationEndDate" type="wo:ReferenceLocationEndDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date on which the monitoring location stopped being used as a reference site.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ReferenceLocationStartDate" type="wo:ReferenceLocationStartDateDataType">
    <xsd:annotation>
      <xsd:documentation>The calendar date on which the monitoring location started being used as a reference site.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ReferenceLocationTypeCode" type="wo:ReferenceLocationTypeCodeDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies whether this site is a reference or control site by specifying the reference location type.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResourceCreatorName" type="wo:ResourceCreatorNameDataType">
    <xsd:annotation>
      <xsd:documentation>An entity primarily responible for making the content of the resource.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResourceDate" type="wo:ResourceDateDataType">
    <xsd:annotation>
      <xsd:documentation>A date of an event in the lifecycle of the resource.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResourceIdentifier" type="wo:ResourceIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>An unambiguous reference to the resource within a given context.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResourcePublisherName" type="wo:ResourcePublisherNameDataType">
    <xsd:annotation>
      <xsd:documentation>An entity responsible for making the resource available.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResourceSubjectText" type="wo:ResourceSubjectTextDataType">
    <xsd:annotation>
      <xsd:documentation>A topic of the content of the resource.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResourceTitleName" type="wo:ResourceTitleNameDataType">
    <xsd:annotation>
      <xsd:documentation>A name given to the resource.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultCount" type="wo:ResultCountDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the number of result records that exist for a particular activity.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultDetectionConditionText" type="wo:ResultDetectionConditionTextDataType">
    <xsd:annotation>
      <xsd:documentation>The textual descriptor of a result.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultLaboratoryCommentCode" type="wo:ResultLaboratoryCommentCodeDataType">
    <xsd:annotation>
      <xsd:documentation>Remarks which further describe the laboratory procedures which produced the result.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultLaboratoryCommentText" type="wo:ResultLaboratoryCommentTextDataType">
    <xsd:annotation>
      <xsd:documentation>Remarks which further describe the laboratory procedures which produced the result.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultMeasureValue" type="wo:ResultMeasureValueDataType">
    <xsd:annotation>
      <xsd:documentation>The reportable measure of the result for the chemical, microbiological or other characteristic being analyzed.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultParticleSizeBasisText" type="wo:ResultParticleSizeBasisTextDataType">
    <xsd:annotation>
      <xsd:documentation>User defined free text describing the particle size class for which the associated result is defined.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultSampleFractionText" type="wo:ResultSampleFractionTextDataType">
    <xsd:annotation>
      <xsd:documentation>The text name of the portion of the sample associated with results obtained from a physically-partitioned sample.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultStatusIdentifier" type="wo:ResultStatusIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>Indicates the acceptability of the result with respect to QA/QC criteria.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultTemperatureBasisText" type="wo:ResultTemperatureBasisTextDataType">
    <xsd:annotation>
      <xsd:documentation>The name that represents the controlled temperature at which the sample was maintained during analysis, e.g. 25 deg BOD analysis.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultTimeBasisText" type="wo:ResultTimeBasisTextDataType">
    <xsd:annotation>
      <xsd:documentation>The period of time (in days) over which a measurement was made. For example, BOD can be measured as 5 day or 20 day BOD.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultValueTypeName" type="wo:ResultValueTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>A name that qualifies the process which was used in the determination of the result value (e.g., actual, estimated, calculated).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ResultWeightBasisText" type="wo:ResultWeightBasisTextDataType">
    <xsd:annotation>
      <xsd:documentation>The name that represents the form of the sample or portion of the sample which is associated with the result value (e.g., wet weight, dry weight, ash-free dry weight).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SampleCollectionEquipmentCommentText" type="wo:SampleCollectionEquipmentCommentTextDataType">
    <xsd:annotation>
      <xsd:documentation>Free text with general comments further describing the sample collection equipment.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SampleCollectionEquipmentName" type="wo:SampleCollectionEquipmentNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name for the equipment used in collecting the sample.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SampleContainerColorName" type="wo:SampleContainerColorNameDataType">
    <xsd:annotation>
      <xsd:documentation>The text describing the sample container color.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SampleContainerTypeName" type="wo:SampleContainerTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>The text describing the sample container type.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SampleTissueAnatomyName" type="wo:SampleTissueAnatomyNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of the anatomy from which a tissue sample was taken.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SampleTransportStorageDescription" type="wo:SampleTransportStorageDescriptionDataType">
    <xsd:annotation>
      <xsd:documentation>The text describing sample handling and transport procedures used.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SamplingComponentName" type="wo:SamplingComponentNameDataType">
    <xsd:annotation>
      <xsd:documentation>Single entity within a sampling frame at which a collection procedure or protocol was performed (e.g. transect, plot point).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SamplingComponentPlaceInSeriesNumeric" type="wo:SamplingComponentPlaceInSeriesNumericDataType">
    <xsd:annotation>
      <xsd:documentation>The order in which a component within the sampling frame was visited in relation to other components.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SamplingDesignTypeCode" type="wo:SamplingDesignTypeCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code used to identify the type of sampling design employed for this project to ensure that sampling activities can support project objectives.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SourceMapScaleNumeric" type="wo:SourceMapScaleNumericDataType">
    <xsd:annotation>
      <xsd:documentation>The number that represents the proportional distance on the ground for one unit of measure on the map or photo.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="StateCode" type="wo:StateCodeDataType">
    <xsd:annotation>
      <xsd:documentation>A code designator used to identify a principal administrative subdivision of the United States, Canada, or Mexico.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="StatisticalBaseCode" type="wo:StatisticalBaseCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The code for the method used to calculate derived results.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="StatisticalStratumText" type="wo:StatisticalStratumTextDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the statistical stratum applied to this site.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SubjectTaxonomicName" type="wo:SubjectTaxonomicNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of the organism sampled as part of a biological sample.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SubstanceDilutionFactorNumeric" type="wo:SubstanceDilutionFactorNumericDataType">
    <xsd:annotation>
      <xsd:documentation>The overall dilution of the substance subjected to this analysis.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="SupplementalAddressText" type="wo:SupplementalAddressTextDataType">
    <xsd:annotation>
      <xsd:documentation>The text that provides additional information about an address, including a building name with its secondary unit and number, an industrial park name, an installation name or descriptive text where no formal address is available.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TaxonomicPollutionTolerance" type="wo:TaxonomicPollutionToleranceDataType">
    <xsd:annotation>
      <xsd:documentation>For entries representing taxa, a code representing the ability of the reported taxon to tolerate pollution.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TaxonomistAccreditationIndicator" type="wo:TaxonomistAccreditationIndicatorDataType">
    <xsd:annotation>
      <xsd:documentation>Indicates whether the taxonomist is accredited.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TaxonomistAccreditationAuthorityName" type="wo:TaxonomistAccreditationAuthorityNameDataType">
    <xsd:annotation>
      <xsd:documentation>An outside accreditation authority identifier for the taxonomist.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TaxonomicPollutionToleranceScaleText" type="wo:TaxonomicPollutionToleranceScaleTextDataType">
    <xsd:annotation>
      <xsd:documentation>Provides a description of the scale used for the taxonomic pollution tolerance value.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TelephoneExtensionNumberText" type="wo:TelephoneExtensionNumberTextDataType">
    <xsd:annotation>
      <xsd:documentation>The number assigned within an organization to an individual telephone that extends the external telephone number.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TelephoneNumberText" type="wo:TelephoneNumberTextDataType">
    <xsd:annotation>
      <xsd:documentation>The number that identifies a particular telephone connection.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TelephoneNumberTypeName" type="wo:TelephoneNumberTypeNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name that describes a telephone number type.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ThermalPreservativeUsedName" type="wo:ThermalPreservativeUsedNameDataType">
    <xsd:annotation>
      <xsd:documentation>Information describing the temperature means used to preserve the sample.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TimeZoneCode" type="wo:TimeZoneCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The time zone for which the time of day is reported. Any of the longitudinal divisions of the earth's surface in which a standard time is kept.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="Time" type="wo:TimeDataType">
    <xsd:annotation>
      <xsd:documentation>The time of day that is reported.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="ToxicityTestType" type="wo:ToxicityTestTypeDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the type of toxicity as either Acute or Chronic.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TribalCode" type="wo:TribalCodeDataType">
    <xsd:annotation>
      <xsd:documentation>The code that represents the American Indian tribe or Alaskan Native entity.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TribalLandIndicator" type="wo:TribalLandIndicatorDataType">
    <xsd:annotation>
      <xsd:documentation>An indicator denoting whether the location is on a tribal land.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TribalLandName" type="wo:TribalLandNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of an American Indian or Alaskan native area where the location exists.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="TrophicLevelName" type="wo:TrophicLevelNameDataType">
    <xsd:annotation>
      <xsd:documentation>For entries representing taxa, a code representing the trophic level with which the reported taxon is typically assigned.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="UnidentifiedSpeciesIdentifier" type="wo:UnidentifiedSpeciesIdentifierDataType">
    <xsd:annotation>
      <xsd:documentation>A number or name assigned as a part of a taxonomic identification. Used with a valid genus name to indicate a unique species has been observed but not taxonomically identified.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="UpperConfidenceLimitValue" type="wo:UpperConfidenceLimitValueDataType">
    <xsd:annotation>
      <xsd:documentation>Value of the upper end of the confidence interval.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="UpperClassBoundValue" type="wo:UpperClassBoundValueDataType">
    <xsd:annotation>
      <xsd:documentation>This described the upper bound for a frequency class descriptor.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="VerticalCollectionMethodName" type="wo:VerticalCollectionMethodNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name that identifies the method used to collect the vertical measure (i.e. the altitude) of a reference point.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="VerticalCoordinateReferenceSystemDatumName" type="wo:VerticalCoordinateReferenceSystemDatumNameDataType">
    <xsd:annotation>
      <xsd:documentation>The name of the reference datum used to determine the vertical measure (i.e., the altitude).</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="VoltinismName" type="wo:VoltinismNameDataType">
    <xsd:annotation>
      <xsd:documentation>The number of broods or generations of the characteristic in a year.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:element name="WellTypeText" type="wo:WellTypeTextDataType">
    <xsd:annotation>
      <xsd:documentation>Identifies the primary well type.</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
</xsd:schema>